Daitsu FDLA-09, Installation, Operation & Service Manual

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SK2018 GLOBAL FDLA-V/P-AC-001
Abbreviations
Ts = Setting temperature AUX1 = Hot water free contact
Tr = Room air temperature AUX2 = Chilled water free contact
Ti1 = Chilled water coil temperature MTV1 = Chilled water valve
Ti2 = Hot water coil temperature MTV2 = Hot water valve
I/O Port Definitions
I/O Code 2-Pipe 4-Pipe
Analogue Input
Return air Sensor AI1 Return air temperature (Tr)
Chilled water Sensor AI2
Chilled / hot water coil circuit
(Ti1)
Chilled water coil circuit (Ti1)
Hot water Sensor AI3 N/A Hot water coil circuit (Ti2)
Input
IR receiver X-DIS 1 Digital communication port to LED display/IR receiver board.
Wired wall pad TTL1 Digital communication port to wired wall-pad board.
Digital input
Occupancy contact PR1/PR2
This contact can be connected to occupancy sensor or BMS
system.
DIP-SWITCH IS ON. (Window contact)
The contact is normally open. If the contact has been closed for 10
minutes, the unit will be shut down.
When the contact is open again, the unit restarts.
DIP-SWITCH IS OFF. (Economy contact)
Cooling operation will only be activated when Tr - Ts ≥ 4ºC. If
Tr<Ts, cool operation will be terminated.
Heating operation will only be activated when Tr-
Ts≤ -4ºC. If
Tr>Ts, heating operation will be terminated.
Float switch Float
Voltage-free (NC). The contact is closed before the float switch is
turned on.
Electrical heater safety
switch
EH
Voltage-free (NC). The contact is closed before the EH is turned
on.
Power input
Phase L
Power supply to the PCB and all the loads connected to the
voltage outputs.
Neutral N
Power supply to the PCB and all the loads connected to the
voltage outputs.
Earth G
Power supply to the PCB and all the loads connected to the
voltage outputs.
Voltage output
High fan speed HF Voltage output (L)
Medium fan speed MF Voltage output (L)
Low fan speed LF Voltage output (L)
Valve1 MTV1
Water valve
Voltage output (L) Chilled water valve
Voltage output (L)
Valve2 MTV2 Reserved
Hot water valve
Voltage output (L)
Water pump WP
Voltage output (L), Power supply to condensate pump.
Voltage of electrical heater
(Live)
L-EH Voltage output (L), maximum 30A.
Output
Stepping motor CN1, CN2 Power supply to louver stepping motors.
Cold water free contact. AUX2 Voltage free contact. Maximum load 5A.
Hot water free contact. AUX1 Voltage free contact. Maximum load 5A.
In Modbus signal AB
Terminals for local network serial connection
Out Modbus signal AB